Cardiovascular System: Blood Vessels and Circulation Chapter 20 Quiz

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What is the function of vasa vasorum in blood vessels?

Regulate blood pressure in arterioles

Control the diameter of capillaries

Prevent backflow of blood in veins

Deliver nutrients and remove waste from the cells of large vessels (correct)

Which layer of a blood vessel is primarily composed of smooth muscle supported by connective tissue?

Tunica media (correct)

Internal elastic membrane

Tunica externa

Tunica intima

What is the primary function of metarterioles in the circulatory system?

Connect arteries to veins directly

Contain valves to prevent backflow of blood

Regulate blood flow into capillary beds (correct)

Transport oxygenated blood to tissues

What is a characteristic of sinusoid capillaries?

Permeable to larger molecules Signup and view all the answers

How do arterioles contribute to regulating blood pressure?

By slowing down blood flow and decreasing BP Signup and view all the answers

What mechanism leads to vasoconstriction in blood vessels?

Decreases blood flow and increases BP Signup and view all the answers

Why do veins have valves in the circulatory system?

To slow down the flow of blood toward the heart Signup and view all the answers

'Pulse pressure' is defined as:

The difference between systolic and diastolic pressure Signup and view all the answers

'Hypovolemia' refers to a condition characterized by:

Reduced total blood volume Signup and view all the answers

What is the purpose of a precapillary sphincter in the circulatory system?

To regulate blood flow into capillary beds Signup and view all the answers

What is the main function of the skeletal muscle pump in the venous system?

To force blood back toward the heart Signup and view all the answers

Which process describes how large plasma proteins can pass through sinusoids in the capillary exchange program?

Filtration Signup and view all the answers

What is the role of the lymphatic system in the vascular system?

Picks up extra fluid and dumps it into subclavian vein Signup and view all the answers

Which organ shows the highest increase in blood flow from resting to maximal exercise?

Skeletal Muscle Signup and view all the answers

What is the main function of chemoreceptors in the neural regulation of the vascular system?

Monitor oxygen, carbon dioxide, and pH levels Signup and view all the answers

What is the primary function of Antidiuretic Hormone (ADH) in the endocrine regulation of the vascular system?

Target kidneys to reabsorb water and constrict peripheral vessels Signup and view all the answers

What is the mechanism activated due to a decrease in blood flow, eventually leading to Angiotensin 2 release?

Renin-Angiotensin-Aldosterone Mechanism Signup and view all the answers

How does exercise affect LDL cholesterol levels according to the text?

Decreases LDL cholesterol levels Signup and view all the answers

What is a potential consequence of hypertension according to the text?

Heart attack Signup and view all the answers

What is a characteristic of circulatory shock described in the text?

Inability to deliver adequate O2 for normal cellular metabolism Signup and view all the answers

Cardiovascular System: Blood Vessels and Circulation Chapter 20 Quiz

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Questions and Answers

What is the function of vasa vasorum in blood vessels?

Which layer of a blood vessel is primarily composed of smooth muscle supported by connective tissue?

What is the primary function of metarterioles in the circulatory system?

What is a characteristic of sinusoid capillaries?

How do arterioles contribute to regulating blood pressure?

What mechanism leads to vasoconstriction in blood vessels?

Why do veins have valves in the circulatory system?

'Pulse pressure' is defined as:

'Hypovolemia' refers to a condition characterized by:

What is the purpose of a precapillary sphincter in the circulatory system?

What is the main function of the skeletal muscle pump in the venous system?

Which process describes how large plasma proteins can pass through sinusoids in the capillary exchange program?

What is the role of the lymphatic system in the vascular system?

Which organ shows the highest increase in blood flow from resting to maximal exercise?

What is the main function of chemoreceptors in the neural regulation of the vascular system?

What is the primary function of Antidiuretic Hormone (ADH) in the endocrine regulation of the vascular system?

What is the mechanism activated due to a decrease in blood flow, eventually leading to Angiotensin 2 release?

How does exercise affect LDL cholesterol levels according to the text?

What is a potential consequence of hypertension according to the text?

What is a characteristic of circulatory shock described in the text?

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